Pesticide stability studies upon storage in a graphitized carbon black extraction cartridge.

Crescenzi, Carlo; Corcia, Antonio Di; Madbouly, Magdy D.; Samperi, Roberto

doi:10.1021/es00009a006

Cited by 47 publications

(45 citation statements)

References 10 publications

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“…SPE is widely used for pesticides residue analysis for liquid samples such as water (10,11) and juice (12,13). Iijima et al reported that in order to apply food samples to SPE, samples were first extracted with water miscible solvents such as acetone.…”

Section: Introductionmentioning

confidence: 99%

Determination of Neonicotinoid Pesticide Residues in Vegetables and Fruits with Solid Phase Extraction and Liquid Chromatography Mass Spectrometry

Obana

Okihashi

Akutsu

et al. 2003

J. Agric. Food Chem.

176

112

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A rapid and simple extraction method for the simultaneous analysis of five neonicotinoid insecticides has been developed. Twelve different fruit and vegetable matrixes were extracted with methanol and cleaned up using a graphitized carbon solid phase extraction cartridge loading with a 20% methanol solution. The concentrated eluate after methanol elution was then analyzed for pesticide residues by liquid chromatography/mass spectrometry in the APCI positive mode. The five pesticides including nitenpyram, thiamethoxam, imidacloprid, acetamiprid, and thiacloprid were recovered at 70-95% at spike levels of 0.1 and 1 mg/kg in bell pepper, cucumber, eggplant, grape, grapefruit, Japanese radish, peach, pear, potato, rice, and tomato. Relative standard deviations were less than 10% for all of the recovery tests. The proposed method is fast, easy to perform, and could be utilized for regular monitoring of pesticide residues.

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Section: Introductionmentioning

confidence: 99%

Determination of Neonicotinoid Pesticide Residues in Vegetables and Fruits with Solid Phase Extraction and Liquid Chromatography Mass Spectrometry

Obana

Okihashi

Akutsu

et al. 2003

J. Agric. Food Chem.

176

112

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“…This could be due to the elution of a fraction of the selected herbicides during washing, rather than to the degradation or transformation of these chemicals. Crescenzi et al [7] opted for washing cartridges filled with small-particle-size GCB material (Carbopack B 120-400 mesh) with 0.5 mL of MeOH, and then storing them in this same solvent. Our results show that for large-particle-size GCB material (Carbopack B 120-400 mesh) this is not necessary for the selected chemicals.…”

Section: Solvent Washingmentioning

confidence: 99%

“…The results obtained with this technique show that the stability of the compounds depends on their water solubility and vapour pressure. Other recent papers have demonstrated that solid-phase extraction (SPE) is a good alternative to the storage of pesticides preconcentrated from water samples [2,4,[7][8][9][10][11][12]. In general, many pesticides are quite stable, except for compounds such as captan, carbofuran, fenamiphos, trifluraline, due to their physico-chemical properties and sample preconcentration conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Some examples of degradation processes include hydrolysis on Empore disks, hydrolysis and photochemical degradation on SPE cartridges, hydrolysis catalyzed by graphitized carbon black (GCB) surface, hydrolysis by residual water and biodegradation on GCB material [7][8][9]. Studies dealing with the stability of organic contaminants on filter or cartridgeextraction material (C-18, GCB, XAD-2) have already been published [2,4,[7][8][9][10][11][12], although only three papers have focused on the use of GCB cartridges for stabilizing phenylureas and other selected pesticides [7,12,13]. None, however, deals with the storage of organonitrogen and phenylurea herbicides and their degradation products, after simultaneous extraction from large volumes of surface water using largeparticle-size GCB cartridges.…”

Section: Introductionmentioning

confidence: 99%

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Stability of herbicides and their degradation products on graphitized carbon black extraction cartridges used for large volumes of surface water

2000

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Abstract. The stability of 18 herbicides (ten organonitrogens and eight phenylureas, including four degradation products), selected for the frequency of their detection in the environment, was evaluated under a variety of storage conditions. Large volumes of surface water (4 L) were extracted using large-particle-size graphitized carbon black cartridges (Carbopack B 60-80 mesh). The effects of temperature, matrix type, drying and solvent-washing of cartridges on the recovery of these contaminants, after different storage periods, were studied and compared to the conservation of surface water in bottles. After two months, there was no significant difference between the conserved surface water and the stored cartridges for the selected compounds. Cartridges kept at -20°C were better than those stored at 4°C and 20°C. The type of matrix water selected, in this case St. Lawrence surface water, appears to have a minor effect on the recovery of the target pesticides after cartridge storage. No improvement was observed in the recovery of any of the chemicals when the cartridges were dried or washed and stored in a solvent. After immediate surface-water extraction, the most practical storage condition for the target herbicides was found to be storage on cartridges in the dark at -20°C, with no solvent drying or washing of the Carbopack B material.

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“…Graphitized carbon black containing pesticides was dehydrated by rinsing with methanol then stored in the freezer; this process produced better results than storage of the pesticides in river water at 4°C (Crescenzi et al, 1995). Graphitized carbon black containing pesticides was dehydrated by rinsing with methanol then stored in the freezer; this process produced better results than storage of the pesticides in river water at 4°C (Crescenzi et al, 1995).…”

Section: Individual and Mixtures Of Organic Compoundsmentioning

confidence: 99%

Chemical species

Dietrich¹,

Jensen²,

Costa³

1996

Water Environment Research

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This review of the 1995 literature summarizes analytical techniques for the determination of chemical species in natural waters, wastewater, and drinking water. The emphasis is on chemical species of interest to environmental professionals. The review is organized into four main sections. The first section describes New Chemical Methods for determination of aqueous pollutants, whereas the second section describes New Biological Methods.

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Pesticide stability studies upon storage in a graphitized carbon black extraction cartridge.

Cited by 47 publications

References 10 publications

Determination of Neonicotinoid Pesticide Residues in Vegetables and Fruits with Solid Phase Extraction and Liquid Chromatography Mass Spectrometry

Determination of Neonicotinoid Pesticide Residues in Vegetables and Fruits with Solid Phase Extraction and Liquid Chromatography Mass Spectrometry

Stability of herbicides and their degradation products on graphitized carbon black extraction cartridges used for large volumes of surface water

Chemical species

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